longest free float hand rails for a 20"barrel?

hey guys,i have been thinking about building a 20" upper in 556/223 and want the longest hand rail i can put on it.i know about and already have a 15" troy alpha rail(new style)on a 16" barrel(blackout upper).what rails are out there that are longer?if you could leave name and model type or even better a link;i would really appreciate it!thanks all!

I believe Geissele will have some extended rails once they hit the market. I don’t know if they’ll have longer options than Troy, but I like the look of the Geissele more than Troy personally.

i`ll take a look on their site.thanks!

I didn’t see anything direct on their site (unless I missed it). There are some threads on here about it with pics though, linked.

https://www.m4carbine.net/showthread.php?t=97294

i looked too.thanks for the link!

he states in the video in two months for $320.00 w/barrel nut in 8’-15".

Noveske

the Noveske NSR-11 in 16" will be nice when it comes out!